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<?php
/**
* Copyright 2017 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
namespace Google\Cloud\Core\Testing\System;
use Google\Cloud\BigQuery\BigQueryClient;
use Google\Cloud\BigQuery\Dataset;
use Google\Cloud\Core\Exception\BadRequestException;
use Google\Cloud\Core\Exception\GoogleException;
use Google\Cloud\Core\ExponentialBackoff;
use Google\Cloud\PubSub\PubSubClient;
use Google\Cloud\PubSub\Topic;
use Google\Cloud\Storage\Bucket;
use Google\Cloud\Storage\StorageClient;
use Google\Cloud\Core\Testing\System\DeletionQueue;
use PHPUnit\Framework\TestCase;
/**
* SystemTestCase can be extended to implement system tests
*
* @experimental
* @internal
*/
class SystemTestCase extends TestCase
{
protected static $deletionQueue;
private static $emulatedClasses = [];
private static $emulatedClassPrefixes = [];
/**
* Set up the deletion queue
*
* @experimental
* @internal
*/
public static function setupQueue()
{
if (!self::$deletionQueue) {
self::$deletionQueue = new DeletionQueue;
}
}
/**
* Process the deletion queue
*
* @experimental
* @internal
*/
public static function processQueue()
{
self::$deletionQueue->process();
}
/**
* Create a random integer ID for test entities.
*
* @return int
*
* @experimental
* @internal
*/
public static function randId()
{
return rand(1, 9999999);
}
/**
* Create a bucket and enqueue it for deletion.
*
* This method provides a means of creating a bucket with pre-configured
* flush+delete functionality. Use in place of `StorageClient::createBucket()`.
*
* When inserting objects into a bucket created with this method, you do NOT need
* to enqueue those objects for deletion or concern yourself with order of
* operations.
*
* @param StorageClient $client
* @param string $bucketName
* @param array $options
* @return Bucket
* @throws GoogleException
*
* @experimental
* @internal
*/
public static function createBucket(StorageClient $client, $bucketName, array $options = [])
{
$backoff = new ExponentialBackoff(8, function ($ex) {
return !($ex instanceof BadRequestException);
});
$bucket = $backoff->execute(function () use ($client, $bucketName, $options) {
return $client->createBucket($bucketName, $options);
});
self::$deletionQueue->add(function () use ($bucket) {
foreach ($bucket->objects() as $object) {
$object->delete();
}
$bucket->delete();
});
return $bucket;
}
/**
* Create a dataset and enqueue it for deletion.
*
* This method provides a means of creating a dataset with pre-configured
* flush+delete functionality. Use in place of `BigQueryClient::createDataset()`.
*
* When inserting tables into a dataset created with this method, you do NOT need
* to enqueue those tables for deletion or concern yourself with order of
* operations.
*
* @param BigQueryClient $client
* @param string $datasetName
* @param array $options
* @return Dataset
*
* @experimental
* @internal
*/
public static function createDataset(BigQueryClient $client, $datasetName, array $options = [])
{
$dataset = $client->createDataset($datasetName, $options);
self::$deletionQueue->add(function () use ($dataset) {
$dataset->delete(['deleteContents' => true]);
});
return $dataset;
}
/**
* Create a topic and enqueue it for deletion.
*
* This method provides a means of creating a topic with pre-configured
* flush+delete functionality. Use in place of `PubSubClient::createTopic()`.
*
* When inserting subscriptions into a topic created with this method, you do NOT need
* to enqueue those subscriptions for deletion or concern yourself with order of
* operations.
*
* @param PubSubClient $client
* @param string $topicName
* @param array $options
* @return Topic
* @throws GoogleException
*
* @experimental
* @internal
*/
public static function createTopic(PubSubClient $client, $topicName, array $options = [])
{
$backoff = new ExponentialBackoff(8);
$topic = $backoff->execute(function () use ($client, $topicName, $options) {
return $client->createTopic($topicName, $options);
});
self::$deletionQueue->add(function () use ($topic) {
foreach ($topic->subscriptions() as $subscription) {
$subscription->delete();
}
$topic->delete();
});
return $topic;
}
/**
* Set "using emulator" flag for single test case.
*
* Should be called in `setUpBeforeClass()` method. This will allow to
* skip tests that are not supported by emulator.
*
* Example:
* ```
* self::setUsingEmulator(getenv('FOOBAR_EMULATOR_HOST'));
* ```
*
* @param bool $enabled Whether emulator is detected. **Defaults to** `true`.
*/
public static function setUsingEmulator($enabled = true)
{
self::$emulatedClasses[get_called_class()] = (bool)$enabled;
}
/**
* Set "using emulator" flag for test cases with specified fully-qualified name prefix.
*
* Should be called in `setUpBeforeClass()` method. This will allow to
* skip tests that are not supported by emulator.
*
* Example:
* ```
* // Set flag for called class namespace.
* self::setUsingEmulatorForClassPrefix(getenv('FOOBAR_EMULATOR_HOST'));
* ```
*
* ```
* // Set flag for some other namespace.
* self::setUsingEmulatorForClassPrefix(getenv('FOOBAR_EMULATOR_HOST'), 'Foobar\\Tests\\System\\Admin\\');
* ```
*
* @param bool $enabled Whether emulator is detected. **Defaults to** `true`.
* @param string|null $prefix Fully-qualified class name prefix. **Defaults to** called class namespace.
*/
public static function setUsingEmulatorForClassPrefix($enabled = true, $prefix = null)
{
if (!isset($prefix)) {
$className = get_called_class();
$prefix = substr($className, 0, strrpos($className, '\\') + 1);
}
self::$emulatedClassPrefixes[$prefix] = (bool)$enabled;
}
/**
* Returns `true` when "using emulator" flag is set either for called class name or its
* fully-qualified name prefix or `false` otherwise.
*
* Example:
* ```
* $transports = [['grpc']];
* if (!self::isEmulatorUsed()) {
* $transports[] = ['rest'];
* }
* ```
*
* @return bool
*/
public static function isEmulatorUsed()
{
$className = get_called_class();
if (!isset(self::$emulatedClasses[$className])) {
$prefix = substr($className, 0, strrpos($className, '\\') + 1);
$isEmulated = false;
foreach (self::$emulatedClassPrefixes as $key => $flag) {
if (strpos($prefix, $key) === 0) {
$isEmulated = $flag;
break;
}
}
self::$emulatedClasses[$className] = $isEmulated;
}
return self::$emulatedClasses[$className];
}
/**
* Skips current test (when called from test method) or entire test case (when called from `setUpBeforeClass()`)
* if "using emulator" flag is set either for called class name or its fully-qualified name prefix.
*
* Example:
* ```
* // Use default reason.
* self::skipIfEmulatorUsed();
* ```
*
* ```
* // Use custom reason.
* self::skipIfEmulatorUsed('Administration functions are not supported by emulator.');
* ```
*
* @param string|null $reason Message explaining reason for skipping this test.
*/
public static function skipIfEmulatorUsed($reason = null)
{
if (self::isEmulatorUsed()) {
self::markTestSkipped($reason ?: 'This test is not supported by the emulator.');
}
}
}
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